Locking-hinge.



G. W. KlRSCH-NER.

LOCKING HINGE.

APPLICATION FILED NOV. 16, 19l2. 1,139,193. Patented May11,1915.

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GEORGE W. KIRSCHNER, OF WEST HAVEN, CONNECTICUT, 'ASSIGNOR TO SAR-GENT & COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCKING-HINGE.

Application filed November 16, 1912.

To all whom it may concern:

Be it known that I, GEORGE W. KLRsoH- NER, a citizen of the United States, residing in WVest Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Locking.

Hinges, of which the following is a full, clear, and exact description.

This invention relates to hinges which are provided with means for locking the hinged members in various angular adjustments with respect to each other, and it has particular reference to hinges for easements. l/Vhen so applied, the hinge of my present invention is adapted to pivot the casement to its supporting part, and it may be so manipulated as to lock the casement in its closed position and in a large number of more or less open positions. It will be obvious, however, from the following descrip tion that the invention is likewise applicable to a number of other purposes.

The primary objects of the invention are to provide a hinge having improved and simplified locking mechanism as compared to the locking hinges heretofore devised; to house the locking mechanism effectively within the body of the hinge so that it is fully protected and in such a manner that the bulk of the device is not materially in creased as compared to an ordinary hinge in which no locking mechanism is provided; and to furnish locking mechanism which may be adjusted with great nicety to lock the hinged parts more or less firmly together as called for by different conditions, and wherein the locking operation and the release of the parts from locking engagement may be effected with maximum facility.

To these and other ends the invention con sists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings, illustrating a preferred embodiment of the invention, Figure 1 is a side elevation of the hinge, Fig. 2 is a section on line 22 of Fig. 1, showing the locking mechanism released,

Fig. 3 is a top view of the hinge showing it Specification of Letters Patent.

Patented May 11, 1915.

Serial No. 731,791.

elevation of the plug and its associated adusting mechanism, Fig. 7 is a detail view of one plntle, Fig. 8 is a section on line 88 of F 1g. 2, Fig. 9 is a section on line 99 of Fig. 2, and Fig. 10 is a detail of one of the locking nuts.

In the drawings, I have shown the invention applied to a butt hinge comprising hinge members or leaves 20 and 21. The leaf 20 has three knuckles 22, 23, 24, and the leaf 21 has two knuckles 25, 26, but the number of knuckles may be widely varied as called for by conditions. In the form shown, the uppermost knuckle 22 is provided at its lower portion, adjacent the knuckle 25 of the other leaf, with a comparatively large opening 27 above which the knuckle is counterbored and provided with interior screw threads 28 to provide a threaded socket for the reception of a cap member or plug 29 having threads engaged with those of the socket so that the plug is removably seated in the knuckle and detachable therefrom. The plug 29 is provided at its periphery with a shoulder 30 overlying the peripheral portion of the knuckle 22 and said plug is provided with a vertical bore 31 located in the axis of the hinge. The knuckle 25 is provided with a square or other polygonal opening 32 extending completely therethrough at a point beneath the plug 29, and in said opening a nut 33 is fitted and adapted to be adjusted vertically by means of a spindle 34 passing upward through the bore.31 and having at its lower end portion threads 35 engaging interior threads 36 of said nut. The upper end of the spindle 34 passes upward out of the plug 29 and is suitably secured by means such as the pin 36 to a milled adjusting head 37 located above the plug and rotatablewith respect to the latter. The threaded spindle 34 is freely rotatable in the bore 31 i as the head 37 is rotated in either direction, but in order to prevent the lengthwise displacement of the spindle or screw with respect to the plug the former is provided with a collar 38 beneath a shoulder 39 of the plug, as shown in Figs. 2 and 5. It will therefore be understood that the head of the screw 34 prevents displacement of the latter in one direction relatively to the plug while the collar 38 prevents displacement in the opposite direction. It will also be understood that as the square hole 32 prevents rotation of the nut 33 the latter will be obliged to rise or descend according as the threaded adjusting screw 3 is rotated in one or the other direction.

The nut 33, which is angularly fixed with reference to the knuckle 25 and the leaf 21, is adapted to be moved by the adjusting screw into and out of frictional engagement with a similar nut 4L0 fitted in the knuckle 23 and fixed with respect to said knuckle and the leaf 20. In the form shown, the nut a0 fits a correspondingly shaped opening at the upper part of the knuckle 23, and it is secured against vertical movement in said opening by means of a pintle 41 which passes through the knuckles 24: and 26 and is provided at its inner end with an exteriorly threaded portion 42 screwed into a threaded opening a3 of the nut 40. This connection between the nut L0 and pintle 4C1 also serves to hold the pintle in place, with its collar 41* abuttcd against the lowermost knuckle 24.

The interlocking surfaces of the locking mechanism are constituted by the opposing surfaces of the two nuts 33 and. lO, that is, by the lower surface of the nut 33 and the upper surface of the nut i0. In order to provide a very secure and reliable locking effect these opposing surfaces are roughened in some appropriate way, for instance, by providing them with a plurality of radial locking ribs a l. As the longitudinally movable nut 33 is lowered by its adjusting screw, its locking ribs will mesh with those of the nut 40 and hence as the respective nuts are fixed angularly with respect to the two leaves of the hinge, the latter will be effectively prevented from angular movement with respect to each other.

In assembling the hinge, the perforated knuckles or ears are interfitted in the usual way, the nut 40 being first placed in its seat in the knuckle23. The pintle 41 is then passed through the knuckles 24; and 26 and screwed into the nut &0 to hold the latter in place. The plug 29 is then inserted into the open upper end of the hinge and it carries the nut 33 which is fitted into the opening 82. In order to facilitate the screwing of the pluginto the knuckle 22, the plug may be provided with a wrench face 45. The operation of the device, when assembled will be obvious for the most part from the foregoing description. A rotation of i the adjusting screw 34 in one direction will move the nut 33 into interlocking'contact with the nut 40 and thereby firmly interlock the hinged members, while a rotation of the adjusting screw in the opposite direction will release the nuts from locking engage-.

ment.

The part 34 not only serves as an adjusting screw but also as a pintle for connecting the knuckles 22 and 25. This pintle has a vertical movement in order to move one locking member into engagement with another. The other pintle 41, which connects the remaining knuckles of the hinge serves the additional function of holding the other member of the locking mechanism securely in place. The nuts 33 and 40 may be regarded as constituting a clutch, one member of which is attached to an axially movable plntle while the other is held stationary by" a pintle which is fixed against lengthwise movement. The opening 32 in the knuckle 25 serves as a rectilinear guide for one of the clutch members.

In order to facilitate the adjustment of the movable member 33 of the clutch, I prefer to provide means for arresting said memher in its upward movement as soon as it is substantially disengaged from the fixed clutch member. In the form shown this result is attained by providing the plug 29 with an annular stop flange 29 depending from the plug around the adjusting screw or spindle immediately above the clutch member 33. Hence when said clutch member has been substantially removed from engagement with the clutch member 40 it will be arrested by contact with the flange 29 and the operator will know that it is unnecessary to give the adjusting screw a further rotation in order to fully release the parts.

While the foregoing description is necessarily a detailed one in so far as it concerns the particular embodiment of my invention selected for illustration, it will be obvious that numerous modifications of the construction may be adopted within the scope of the following claims.

What I claim is:

1. In a locking hinge, the combination of hinge members having alined knuckles, means connecting said knuckles, and a clutch comprising cooperating members non-rotatably fixed within the respective knuckles, one of said members being movable axially of the hinge into engagement with the other; substantially as described.

2. In a locking hinge, the combination of hinge members having alined knuckles, a separate locking member fixed within one of said knuckles, and a cooperating locking member guided rectilinearly in the other knuckle and movable axially of the hinge into and out of engagement with said first locking member; substantially as described.

3. In a locking hinge, the combination of two hinge members having knuckles with polygonal openings, a locking nut fixed in one of said openings, a cooperating locking nut guided in the other opening, and a mem her having threaded engagement with said movable nut to adjust the same; substantially as described.

I. In a locking hinge, the combination of hinge members having a pluralitv of interfitting perforated knuckles, clutch members non-rotatably fitted within two adjacent intermediate knuckles, a pintle at one end of the hinge connected with one of said clutch members, and a pintle at the opposite end of the hinge connected with the other clutch member; substantially as described.

5. In a locking hinge, the combination of two hinge members having a plurality of interfitting perforated knuckles, a separate clutch member housed in one of said knuckles in the axis of the hinge, a pintle secured to said clutch member and holding it against displacement axially of the hinge, a cooperating clutch member housed in another knuckle, and means for adjusting said second clutch member toward and away from the first clutch member; substantially as described.

6. In a locking hinge, the combination of a hinge member having locking means, a knuckle on said member having a threaded socket, a second hinge member, a knuckle on said second hinge member, a locking member carried by said last named knuckle to cooperate with said locking means, a plug screwed in the socket of said first named knuckle, and adjusting means for said locking member carried by said plug; substantially as described. M

7 In a locking hinge, the combination of a hinge member having locking means, a knuckle on said member having a threaded socket, a second hinge member, a knuckle on said second hinge member, a locking member carried by said last named knuckle to cooperate with said locking means, a plug screwed in the socket of said first named knuckle and adjusting means for said locking member carried by said plug and comprising a spindle freely rotatable in said plug and having threaded engagement with said locking member; substantially as described.

8. In a locking hinge, the combination of hinge members having a plurality of interfitting perforated knuckles, a plug fitting in one of said knuckles at one end of the hinge, a spindle freely rotatable in said plug and having an operating head at the end of the hinge, and an axially movable locking member connected with the inner end of said spindle and adjustable thereby; substantially as described.

9. In a locking hinge, the combination of two hinge members having a plurality of interfitting perforated knuckles, two of the intermediate knuckles being provided with polygonal openings, clutch members freely but non-rotatably set in said openings, a fixed pintle connecting certain of said knuckles and secured to one of said clutch members, and a second pintle connecting other of said knuckles, movable to adjust the other clutch,

member toward and away from the first clutch member; substantially as described.

10. In a locking hinge, the combination of two hinge members, a fixed pintle at one end of the hinge, a movable pintle at the opposite end of the hinge, and a locking clutch member adjustable by said movable pintle; substantially as described.

11. In a locking hinge, the combination of two hinge members having interfitted perforated knuckles, a plug in one of said knuckles, an adjusting member movable in said plug, a locking member movable by the adjustment of said adjusting member, and a stop on said plug to limit the movement of said locking member; substantially as described.

12. A locking hinge including locking members having interdigitating knuckles, members connecting said knuckles, said members being in axial alinement, and a clutch member supported by each of said members and held against rotation by the knuckles, one of' said members being adjustable whereby the clutch members may be brought into and out of interlocking relation.

13. A locking hinge including locking members having interdigitating knuckles, independently operable members connecting said knuckles, said members being in axial alinement, a clutch member carried by each of said connecting members and supported against rotation by adjacent knuckles of the locking members, one of the locking members being adj ustably mounted in the knuckles Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. O. 

